KR20170111020A - Heating system for vehicle using engine exhaust heat - Google Patents

Abstract

The present invention relates to a vehicle heating system using engine exhaust waste heat, an exhaust gas heat exchanger (100) coupled to enclose an exhaust pipe (2) connected to an engine (1) of a vehicle and having a heat exchange medium accommodated therein; And a heater core (200) connected to the exhaust gas heat exchanger (100) and provided in the air conditioner (4) of the vehicle (3); Phase heat exchange medium heated by the exhaust gas in the exhaust gas heat exchanger 100 is flowed into the heater core 200 and the gaseous heat exchange medium flowing into the heater core 200 flows into the heat- The liquid heat exchanging medium cooled by the air flowing in the outside and being liquefied flows into the exhaust gas heat exchanger 100 and the air heated by the heater core 200 is introduced into the room of the vehicle, It is possible to quickly heat the interior of the vehicle when the heating performance is insufficient as in the initial stage of starting the vehicle and to improve the energy efficiency of the engine by using exhaust heat of the engine To a vehicle heating system.

Description

TECHNICAL FIELD [0001] The present invention relates to a vehicle heating system using engine exhaust heat,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle heating system using engine exhaust waste heat that can increase the energy efficiency of a vehicle by utilizing exhaust waste heat, which is thermal energy of exhaust gas generated from an engine of a vehicle, for indoor heating.

The waste heat generated in the engine of the vehicle is transmitted through the cooling water for cooling the engine and the exhaust gas discharged to the outside.

[0004] However, the present cooling water is not used for heating the vehicle but the cooling water heated by the engine circulates in the heater core of the air conditioner of the vehicle and is heat-exchanged with the air, A method of heating a room is used. That is, as shown in FIG. 1, the engine 10 is connected to the radiator 20 so that the engine can be cooled using cooling water. At this time, a part of the cooling water passes through the heater core 30 connected to the engine 10, and the air is heated by the operation of the blower. The heated air flows into the vehicle interior through the air- .

As a result, in the case of a late-warming diesel engine or a miniaturized HEV (Hybrid Electric Vehicle) engine, the coolant can not be heated quickly in the initial stage of startup, and the amount of heat to be used for heating may be insufficient. Therefore, in this case, since the heating performance becomes insufficient, an auxiliary heater is further installed and used.

However, in the case of using the auxiliary heater, since the auxiliary heater is generally heated by using electricity, the power consumption of the vehicle battery is consumed and the energy efficiency of the vehicle is lowered. In addition, the waste heat of the engine can be transferred to the room by using the heat pipe, but the non-exchangeable gas (NCG) is generated due to chemical instability and the like in a certain amount of the working fluid filled in the heat pipe. The volume for the fluid is changed and the heat transfer performance of the heat pipe is deteriorated. At this time, since the heat pipe is formed as a closed circuit, the non-heatable gas is accumulated inside without being discharged to the outside of the heat pipe, so that the performance may further deteriorate.

KR 2015-0063712 A1 (June 5, 2015)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an exhaust emission control system, And to provide a vehicle heating system using an engine exhaust waste heat that can quickly heat an interior of a vehicle when the vehicle is in shortage and can increase the energy efficiency of the vehicle.

In order to achieve the above object, the vehicle heating system using the engine exhaust waste heat of the present invention is connected to enclose an exhaust pipe (2) connected to an engine (1) of a vehicle and includes an exhaust gas heat exchange (100); And a heater core (200) connected to the exhaust gas heat exchanger (100) and provided in the air conditioner (4) of the vehicle (3); Phase heat exchange medium heated by the exhaust gas in the exhaust gas heat exchanger 100 is flowed into the heater core 200 and the gaseous heat exchange medium flowing into the heater core 200 flows into the heat- A liquid-phase heat exchange medium which is cooled by liquefied air and flows into the exhaust gas heat exchanger 100, and the air heated by the heater core 200 is introduced into a room of the vehicle .

The first connection pipe 110 is formed to connect one side of the exhaust gas heat exchanger 100 and one side of the heater core 200 and the other side of the exhaust gas heat exchanger 100 is connected to the heater core 200, The second connection pipe 120 is formed so that the other side of the second connection pipe 120 is connected.

A first connection pipe 110 is connected to the exhaust gas heat exchanger 100 and a second connection pipe 120 is connected to a lower side of the exhaust gas heat exchanger 100.

The exhaust gas heat exchanger (100) is disposed below the heater core (200).

In addition, the heater core 200 is characterized in that the tube 230 is inclined or vertically arranged such that the height of the side where the liquid phase heat exchange medium is discharged is lower than the side where the gas phase heat exchange medium is introduced.

The heat exchange medium is accommodated in the internal space of the exhaust gas heat exchanger 100, and the heat exchange medium is accommodated at a height lower than the upper end of the exhaust pipe 2 so that a part of the heat exchange medium is empty.

Further, a first charge valve 310 for exchanging and filling the heat exchange medium is installed in the flow path for flowing the liquid heat exchange medium adjacent to the exhaust gas heat exchanger 100 or the exhaust gas heat exchanger 100 .

In addition, a second charge valve 320 for removing gas is installed in the flow path of the gaseous heat exchange medium adjacent to the heater core 200 or the heater core 200.

The vehicle heating system using the engine exhaust waste heat of the present invention utilizes exhaust waste heat, which is heat energy of exhaust gas generated from the engine of a vehicle, for indoor heating so that the interior of the vehicle can be quickly It has the advantage of being able to heat up and increase the energy efficiency of the vehicle.

Further, since the state change of the heat exchange medium and thus the flow of the heat exchange medium due to buoyancy and gravity are used, a separate pump or compressor for circulating the heat exchange medium is not required, There is an advantage that it can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a system for heating a vehicle interior using a heater core connected to a conventional engine. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle heating system using engine exhaust waste heat.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle heating system, and more particularly,
4 is a schematic view of a modified embodiment of a heater core according to the present invention;
FIG. 5 is a schematic view showing an embodiment in which charge valves according to the present invention are installed. FIG.

Hereinafter, a vehicle heating system using the engine exhaust waste heat of the present invention having the above-described configuration will be described in detail with reference to the accompanying drawings.

FIG. 2 is a view illustrating a vehicle heating system using engine exhaust waste heat according to an embodiment of the present invention. FIG. 3 is a view illustrating a state in which a vehicle heating system using engine exhaust waste heat according to an embodiment of the present invention is installed in a vehicle Fig.

As shown in the figure, the vehicle heating system using the engine exhaust waste heat of the present invention includes an exhaust gas heat exchanger 100 coupled to enclose an exhaust pipe 2 connected to an engine 1 of a vehicle, and having a heat exchange medium therein; And a heater core (200) connected to the exhaust gas heat exchanger (100) and provided in the air conditioner (4) of the vehicle (3); Phase heat exchange medium heated by the exhaust gas in the exhaust gas heat exchanger 100 is flowed into the heater core 200 and the gaseous heat exchange medium flowing into the heater core 200 flows into the heat- The liquid heat exchanging medium cooled by the air flowing outside and being liquefied flows into the exhaust gas heat exchanger 100 and the heated air from the heater core 200 flows into the room of the vehicle.

An exhaust pipe 2 is connected to the engine 1 of the vehicle 3 so that the exhaust gas burned in the engine 1 can be discharged to the outside of the vehicle through the exhaust pipe 2. [ The vehicle 3 is provided with an air conditioner 4 capable of heating and cooling the room and a blower 5 is installed in the air conditioner 4 to blow air into a heat exchanger provided inside the air conditioner Heat-exchanged and heated or cooled air can be configured to flow into the interior of the vehicle.

The exhaust gas heat exchanger 100 is coupled to enclose the exhaust pipe 2 of the vehicle, and a liquid-phase heat exchanging medium may be accommodated therein. The heat exchange medium can be received and flowed to the outside of the exhaust pipe 2 and the exhaust gas can flow into the exhaust pipe 2 so that the heat exchange medium inside the exhaust gas heat exchanger 100 can flow through the exhaust gas And the heat exchange medium can be heated. Here, the exhaust gas heat exchanger 100 may be formed to completely surround the exhaust pipe 2, or may be formed in various other forms. In addition, the exhaust pipe (2) has a fin (2-1) formed therein to improve heat exchange efficiency. When the engine is stopped and no exhaust gas is generated in the engine, a heat exchange medium (working fluid) existing in a liquid state inside the exhaust gas heat exchanger 100 can be used as the heat exchange medium. Exhaust gas is generated, A heat exchange medium can be used which can be converted into a gas phase when it is heated and can be converted into a liquid phase when it is cooled by air in a state of being changed into a gas phase.

The heater core 200 may be connected to the exhaust gas heat exchanger 100 and the heater core 200 may be provided inside the air conditioner 4 of the vehicle 3. The heater core 200 is connected to the exhaust gas heat exchanger 100 so that the gaseous heat exchange medium heated by the exhaust gas is allowed to flow into the heater core 200. The heater core 200 is connected to the blower 5 flows to heat exchange, so that the gaseous heat exchange medium inside the heater core 200 is cooled and the air flowing to the outside can be heated. The gaseous heat exchange medium flowing into the heater core 200 may be liquefied by cooling and converted into a liquid heat exchange medium, and the liquid heat exchange medium may be introduced into the exhaust gas heat exchanger 100. The pressure inside the closed loop rises due to the heated vaporized heat exchange medium, and the liquid heat exchange medium can flow inside the tube 230 of the heater core 200 due to this pressure.

In addition, the air heated by the heater core 200 can be introduced into a room of a vehicle and used for heating.

Thus, the vehicle heating system using the engine exhaust waste heat of the present invention can utilize exhaust waste heat, which is thermal energy of exhaust gas generated from the engine of the vehicle, for indoor heating, and thereby, when the heating performance is insufficient, It has the advantage of being able to heat up quickly and to improve the energy efficiency of the vehicle.

The first connection pipe 110 is formed to connect one side of the exhaust gas heat exchanger 100 and one side of the heater core 200 and the other side of the exhaust gas heat exchanger 100 is connected to the heater core 200, The second connection pipe 120 may be formed so that the other side of the first connection pipe 120 is connected.

The first header tank 210 and the second header tank 220 are arranged such that the heater core 200 is spaced apart from the heater core 200 by a predetermined distance and the tubes 230 are disposed therebetween, Both ends may be coupled to the first header tank 210 and the second header tank 220 and the radiating fins 240 may be interposed between the tubes 230 to improve heat exchange efficiency. One side of the exhaust gas heat exchanger 100 is connected to the first header tank 210 which is one side of the heater core 200 and the other side of the exhaust gas heat exchanger 100 is connected to the side of the heater core 200 And to the second header tank 220 on the other side. The heat exchange medium heated in the exhaust gas heat exchanger 100 and converted into the gas phase is introduced into the first header tank 210 of the heater core 200 from the exhaust gas heat exchanger 100 through the first connection pipe 110 And the heat exchange medium converted into the liquid phase in the heater core 200 can be flowed to flow into the exhaust gas heat exchanger 100 from the second header tank 220 through the second connection pipe 120 . Thus, when exhaust gas is generated and the heat exchange medium is heated, the heat exchange medium may be configured to circulate from the liquid phase to the liquid phase, and to circulate the exhaust gas heat exchanger 100 and the heater core, So that heat exchange efficiency can be improved.

The first connection pipe 110 may be connected to the exhaust gas heat exchanger 100 and the second connection pipe 120 may be connected to the exhaust gas heat exchanger 100.

That is, as shown in the drawing, the lower side of the first connection pipe 110 is connected to the upper side of the exhaust gas heat exchanger 100, so that the heat exchange medium that is evaporated and converted to the gas phase can easily flow upward. And the lower side of the second connection pipe 120 is connected to the lower side of the heater core 200, so that the heat exchange medium, which is liquefied and converted into the liquid phase, can easily flow downward. In this case, the upper side of the first connection pipe 110 and the upper side of the second connection pipe 120 may be connected to various positions of the heater core 200. However, for example, as shown in the upper side of the first connection pipe 110 And the upper side of the second connection pipe 120 may be connected to the lower side of the second header tank 220. In this case,

The exhaust gas heat exchanger 100 may be disposed below the heater core 200.

That is, since the exhaust gas heat exchanger 100 is disposed below the heater core 200 in the gravity direction, the heat exchange medium, which is heated by the exhaust gas in the exhaust gas heat exchanger 100 and is converted into the gas phase, So that the heat exchanging medium, which is cooled by the outside air in the heater core 200 and converted into the liquid phase, flows downward due to gravity and flows into the exhaust gas heat exchanger 100 .

In addition, the tube 230 may be inclined or vertically arranged such that the height of the heater core 200 on the side where the liquid phase heat exchange medium is discharged is lower than the side on which the vapor phase heat exchange medium is introduced.

That is, since the heat exchange medium introduced into the heater core 200 in the gas phase flows through the tubes 230 and is cooled and converted into the liquid phase, the liquid heat exchange medium flows due to gravity and is easily introduced into the second connection pipe 120 . 4, the height of the second header tank 220 through which the liquid-phase heat exchange medium is discharged may be lower than that of the first header tank 210 through which the gaseous heat-exchanging medium is introduced so that the tubes 230 are inclined, 230 may be vertically disposed such that the first header tank 210 is positioned above the gravity direction and the second header tank 220 is positioned below the gravity direction.

Since the state change of the heat exchange medium and thus the flow of the heat exchange medium due to buoyancy and gravity are used, a separate pump or compressor for circulating the heat exchange medium is not required, and the construction is simple, the manufacturing cost is reduced, Can be improved.

The heat exchange medium may be accommodated in the internal space of the exhaust gas heat exchanger 100 such that the heat exchange medium is received at a height lower than the upper end of the exhaust pipe 2, and a part of the heat exchange medium is empty.

This is because the liquid heat exchange medium is accommodated in the internal space of the exhaust gas heat exchanger 100 so that the liquid heat exchange medium can be brought into contact with the outer circumferential surface of the exhaust pipe 2 and the heat exchange medium is brought into contact with the entire exhaust pipe 2 A heat exchanging medium of a liquid phase is provided so as to be lower in height than the upper end of the exhaust pipe 2 so as not to come into contact with the upper side of the exhaust pipe 2 and the inside of the exhaust gas heat exchanger 100 corresponding to the upper side of the exhaust pipe 2 The space is formed to be empty. As a result, a free space in which the gaseous heat exchange medium, which has been heat-exchanged with the exhaust gas and evaporated, can be filled in an empty space inside the exhaust gas heat exchanger 100, which is the upper upper side of the exhaust pipe 2, is secured, The heat exchange medium can be further heated at the upper side of the exhaust pipe 2 and the temperature can be raised so that the outside air flowing into the room of the vehicle can be heated more quickly by heat exchange in the heater core 200.

A first charge valve 310 for exchanging and filling the heat exchange medium may be installed in the flow path of the liquid phase heat exchange medium adjacent to the exhaust gas heat exchanger 100 or the exhaust gas heat exchanger 100 .

5, when the first charge valve 310 is installed directly in the exhaust gas heat exchanger 100 or in the vicinity of the exhaust gas heat exchanger 100 and the liquid heat exchange medium is introduced into the second connection pipe 120 So that it is easy to fill or replace the liquid heat exchange medium in the exhaust gas heat exchanger 100 through the first charge valve 310. [

In addition, a second charge valve 320 for removing gas may be installed in the flow path of the gaseous heat exchange medium adjacent to the heater core 200 or the heater core 200.

That is, depending on the type of the heat exchange medium filled in the exhaust gas heat exchanger 100, a non-convertible gas (NCG) may be generated due to chemical instability or the like. Therefore, A valve 320 may be provided. The second charge valve 320 is installed on the upper or upper end of the first header tank 210 of the heater core 200 or adjacent to the first header tank 210, A non-conductive gas which is installed on the upper side of the heater core 110 and filled in the heater core 200 through the second charge valve 320 can periodically remove the non-conductive gas. Accordingly, the volume of the inside of the heater core 200 for the heat exchange medium can be prevented from being reduced, and the heat exchange efficiency can be improved. Here, the density of the non-evacuating gas is generally lower than the density of the gaseous heat exchange medium and is lower than that of the air, so that it is positioned at the uppermost position on the closed loop, such as the top of the header tank of the heater core 200, . In addition, unnecessary gas inside the heater core 200 may be discharged to the outside through the second charge valve 320.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

1: engine
2: Exhaust pipe
2-1: pin
3: Vehicle
4: Air conditioner
5: Blower
100: Exhaust gas heat exchanger
110: first connector
120: second connector
200: heater core
210: first header tank
220: second header tank
230: tube
240: heat sink fin
310: first charge valve
320: Second charge valve

Claims (8)

An exhaust gas heat exchanger (100) coupled to enclose an exhaust pipe (2) connected to an engine (1) of a vehicle and having a heat exchange medium therein; And
A heater core (200) connected to the exhaust gas heat exchanger (100) and provided in the air conditioner (4) of the vehicle (3); , ≪ / RTI >
The gaseous heat exchange medium heated by the exhaust gas in the exhaust gas heat exchanger 100 and vaporized therein flows into the heater core 200. The gaseous heat exchange medium flowing into the heater core 200 flows through the air The heat exchanging medium having the liquid phase cooled by the heat exchanger 100 is introduced into the exhaust gas heat exchanger 100 and the air heated by the heater core 200 is introduced into the interior of the vehicle. Vehicle heating system.
The method according to claim 1,
A first connection pipe 110 is formed so that one side of the exhaust gas heat exchanger 100 is connected to one side of the heater core 200 and the other side of the exhaust gas heat exchanger 100 is connected to the other side And the second connection pipe (120) is formed so that the second connection pipe (120) is connected to the second connection pipe (120).
The method according to claim 1,
A first connection pipe 110 is connected to the exhaust gas heat exchanger 100 and a second connection pipe 120 is connected to a lower side of the exhaust gas heat exchanger 100, Vehicle heating system using.
The method of claim 3,
Wherein the exhaust gas heat exchanger (100) is disposed below the heater core (200).
The method of claim 3,
Wherein the tube core (230) is inclined or vertically arranged so that the height of the heater core (200) on the side where the liquid phase heat exchange medium is discharged is lower than the side on which the gaseous heat exchange medium is introduced. .
The method according to claim 1,
Wherein the heat exchange medium is accommodated in the internal space of the exhaust gas heat exchanger 100 and the heat exchange medium is accommodated at a height lower than the upper end of the exhaust pipe 2 so that a part of the heat exchange medium is empty. Vehicle heating system.
The method according to claim 1,
A first charge valve 310 for exchanging and filling a heat exchange medium is installed in a flow path for flowing a liquid heat exchange medium adjacent to the exhaust gas heat exchanger 100 or the exhaust gas heat exchanger 100 Vehicle Heating System Using Engine Exhaust Waste Heat.
The method according to claim 1,
And a second charge valve (320) for removing the gas is provided in a flow path of the gaseous heat exchange medium adjacent to the heater core (200) or the heater core (200) .

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